Mattress



FIG. 1 is a top, foot end, perspective view of a mattress showing our new design;

FIG. 2 is a top plan view of the mattress of FIG. 1;

FIG. 3 is a bottom plan view of the mattress of FIG. 1 which forms no part of the claimed design;

FIG. 4 is a right side elevation view of the mattress of FIG. 1;

FIG. 5 is a left side elevation view of the mattress of FIG. 1;

FIG. 6 is head end elevation view of the mattress of FIG. 1; and,

FIG. 7 is a foot end elevation view of the mattress of FIG. 1.

The evenly spaced dashed broken lines appearing in FIGS. 1-7 are for illustrating portions of the mattress that form no part of the claimed design. The dot-dash broken lines define the boundaries of the claim and form no part thereof. 

CLAIM We claim the ornamental design for a mattress, as shown and described. 